JPH01298118A - Continuous iron loss reducing treatment apparatus for grain-oriented silicon steel sheet - Google Patents
Continuous iron loss reducing treatment apparatus for grain-oriented silicon steel sheetInfo
- Publication number
- JPH01298118A JPH01298118A JP12854088A JP12854088A JPH01298118A JP H01298118 A JPH01298118 A JP H01298118A JP 12854088 A JP12854088 A JP 12854088A JP 12854088 A JP12854088 A JP 12854088A JP H01298118 A JPH01298118 A JP H01298118A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- electron beam
- iron loss
- steel plate
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 238000010894 electron beam technology Methods 0.000 claims abstract description 37
- 238000005452 bending Methods 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000012545 processing Methods 0.000 claims description 16
- 238000000137 annealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005381 magnetic domain Effects 0.000 abstract description 7
- 230000001678 irradiating effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000008119 colloidal silica Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 238000009489 vacuum treatment Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、一方向性けい素鋼板の鉄損低減連続処理設
備に関し、とくに真空を利用し、鋼板表面に連続的にエ
レクトロンビームを照射することによって、効果的な磁
区の細分化ひいては鉄損特性の安定した改善を図ろうと
するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to continuous treatment equipment for reducing iron loss of unidirectional silicon steel sheets, and in particular, uses vacuum to continuously irradiate the surface of the steel sheet with an electron beam. By doing so, the aim is to achieve effective subdivision of magnetic domains and stable improvement of core loss characteristics.
一方向性けい素鋼板は、一般に熱間圧延と冷間圧延を経
た冷延薄板の２次再結晶粒を、（１１０）（００１）方
位すなわちゴス方位に高度に集積させて所望の磁気的性
質を具備させ、主に変圧器その他の電気機器類の鉄心に
使用され、ここに磁束密度（Ｂ１１１４１！で代表され
る）が高くしかも鉄損（１１１７１５０値で代表される
）の低いことが要求されるが、これまでの研究努力によ
り今日では、板厚０．３１１ＩＩｌｌでＢ１゜： １．
９０Ｔ以上、１．／、。： １．０５ Ｗ／ｋｇ以下、
また板厚０．２３ｍｍ＋ではＢ、。： １．８９Ｔ以上
、Ｗｌ？／＋１゜： ０．９０Ｗ／ｋｇ以下のような超
低鉄損の一方向性けい素鋼板も製造できるようになった
。Unidirectional silicon steel sheets generally have the desired magnetic properties by highly accumulating the secondary recrystallized grains of a cold-rolled thin sheet through hot rolling and cold rolling in the (110)(001) orientation, that is, the Goss orientation. It is mainly used in the iron core of transformers and other electrical equipment, and is required to have high magnetic flux density (represented by B11141!) and low iron loss (represented by 1117150 value). However, thanks to past research efforts, today it is possible to achieve B1°: 1.
90T or more, 1. /,. : 1.05 W/kg or less,
Also, B for plate thickness 0.23mm+. : 1.89T or more, Wl? /+1°: It has become possible to manufacture unidirectional silicon steel sheets with ultra-low core loss of 0.90 W/kg or less.
しかるに省エネルギーの見地で電力損失のより厳しい低
減要求は、とくに欧米にて鉄損の減少分を換価して変圧
器価格に上積みする、ロスエバリュエーシゴン（鉄損評
価）制度にまで発展し、それも定着するに至っている。However, from the perspective of energy conservation, demands for more stringent reductions in power loss have led to a loss evaluation system, particularly in Europe and the United States, in which the reduced iron loss is converted into cash and added to the transformer price. , which has also become established.
このようにか酷な要請に応えるため発明者らは、一方向
性けい素鋼板の特性改善それも極限的な鉄損低減を目指
して研究活動を続けて来たが、方向性けい素鋼板の最終
焼鈍、つまり仕上げ焼鈍後の操作、とくに被膜処理につ
いての革新的な手法を試み、顕著な鉄損低域の成果を得
、引続く検討と研漕を加えて、以下に述べる一方向性け
い素鋼板の鉄損低減連続処理設備の適合を解明した。In order to meet these severe demands, the inventors have continued their research activities with the aim of improving the properties of grain-oriented silicon steel sheets and reducing iron loss to the utmost. We tried an innovative method for the final annealing, that is, the operation after the final annealing, especially the coating treatment, and achieved remarkable results in lower iron loss. We have clarified the suitability of continuous processing equipment for reducing iron loss of raw steel sheets.
（従来の技術）
特開昭５７−２２５２号、同５７−５３４１９号、同５
Ｂ−２６４０５号及び同５８−２６４０６号各公報には
、仕上げ焼鈍後の一方向性けい素鋼板の表面に、圧延方
向とほぼ直角な向きにレーザ照射を施すことによって局
部的微小ひずみの導入による磁区細分化をもって、鉄損
の低減を図ることが開示されているが、この場合、いわ
ゆるひずみ取り焼鈍を加えない使途では有効であっても
、該焼鈍が施されたときはせっかく導入された局部微小
ひずみが加熱保持中に解放され、磁区幅が拡大してレー
ザ照射による鉄損低減効果が喪失してしまう不利がある
。(Prior art) JP-A-57-2252, JP-A-57-53419, JP-A-5
B-26405 and No. 58-26406 disclose that the surface of a unidirectional silicon steel sheet after finish annealing is irradiated with a laser in a direction substantially perpendicular to the rolling direction to introduce local minute strain. It has been disclosed that magnetic domain refining is used to reduce iron loss, but in this case, although it is effective in applications where so-called strain relief annealing is not added, when such annealing is performed, the introduced local There is a disadvantage that microstrains are released during heating and holding, the magnetic domain width expands, and the iron loss reduction effect by laser irradiation is lost.
これに対して発明者らはさきに、上記のような高温処理
にも拘らず特性劣化を伴うことのない低鉄損一方向性け
い素鋼板の製造に成功した。On the other hand, the inventors have previously succeeded in producing a low core loss unidirectional silicon steel sheet that does not suffer from characteristic deterioration despite the above-mentioned high-temperature treatment.
すなわち方向性けい素鋼板の常法に従う最終仕上げ焼鈍
工程を経た後、りん酸塩とコロイダルシリカを主成分と
する絶縁被膜を形成させたのち、あるいは前記最終仕上
げ焼鈍工程を経て鋼板の外面に生成した酸化物を除去し
た後、表裏両面に研磨処理を施して鏡面状態に仕上げ、
ついでＣＶＤ、イオンブレーティングおよびイオンイン
プランテーションなどによりＴｉ、 Ｚｒ、 Ｖ、 Ｎ
ｂ、 Ｔａ、 Ｃｒ、 Ｍｏ＋Ｗ、 Ｍｎ、 Ｃｏ、
Ｎｉ、 Ａ１． Ｂ及びＳｉの窒化物及び／又は炭化物
ならびにＡＩ＋ Ｎｉ＋ Ｃｕ、 ＷＩ Ｓｓ及びＺｎ
の酸化物のうちから選んだ少なくとも１種からなる極薄
張力被膜を形成させた後、りん酸塩とコロイダルシリカ
を主成分とする絶縁被膜を形成させたのち、鋼板の圧延
方向を横切る向きにエレクトロンビームを照射すること
によって低鉄損を達成するものである。That is, after going through a final finish annealing process according to the usual method for grain-oriented silicon steel sheets, an insulating film mainly composed of phosphate and colloidal silica is formed, or after the final annealing process described above, the insulating film is formed on the outer surface of the steel sheet. After removing the oxides, the front and back surfaces are polished to a mirror finish.
Next, Ti, Zr, V, N are formed by CVD, ion blating, ion implantation, etc.
b, Ta, Cr, Mo+W, Mn, Co,
Ni, A1. B and Si nitrides and/or carbides and AI+ Ni+ Cu, WI Ss and Zn
After forming an ultra-thin tensile coating consisting of at least one kind of oxide selected from the following oxides, an insulating coating mainly composed of phosphate and colloidal silica is formed, and then a tensile coating is applied across the rolling direction of the steel plate. Low iron loss is achieved by irradiating with an electron beam.
（発明が解決しようとする課題）
上記の成功を導いた実験的成果を基盤として、工業的規
模における、その有利な適合を成就すべき、一方向性け
い素鋼板の鉄損低減連続処理設備を与えることが、この
発明の目的である。(Problem to be solved by the invention) Based on the experimental results that led to the above-mentioned success, we have developed a continuous processing equipment for iron loss reduction of grain-oriented silicon steel sheets, which should achieve its advantageous adaptation on an industrial scale. It is an object of this invention to provide.
（課題を解決するための手段）
すなわちこの発明は、一方向性けい素鋼板の常法に従う
仕上げ焼鈍工程を経た鋼板に対し、その圧延方向を横切
る向きにエレクトロンビームを照射するエレクトロンビ
ーム照射装置およびエレクトロンビーム照射時における
該照射源に対する鋼板板幅方向の対向姿勢を、該照射源
を中心とする円弧に沿う凹形状に保持する鋼板湾曲装置
を有する真空処理槽と、この真空処理槽の入側と出側に
て、該処理槽に向けて漸次に高真空度に調圧したそれぞ
れ複数の予備排気槽列とをそなえてなる、一方向性けい
素鋼板の鉄損低減連続処理設備である。(Means for Solving the Problem) That is, the present invention provides an electron beam irradiation device that irradiates an electron beam in a direction transverse to the rolling direction of a steel plate that has undergone a final annealing process according to a conventional method for unidirectional silicon steel sheets; A vacuum processing tank having a steel plate bending device that maintains a steel plate facing the irradiation source in a concave shape along an arc centered on the irradiation source in the width direction of the steel plate during electron beam irradiation, and an entrance side of the vacuum processing tank. This is a continuous processing equipment for reducing iron loss of unidirectional silicon steel sheets, which is equipped with a plurality of preliminary exhaust tank rows each having a pressure gradually regulated to a high degree of vacuum toward the processing tank on the exit side.
第１図に、この発明に従う連続処理設備の好適例を模式
で示す。FIG. 1 schematically shows a preferred example of continuous processing equipment according to the present invention.
図中番号１はアンコイラ−１２は真空処理槽、そして３
．４はそれぞれ真空処理槽２の入側および出側に配置し
た予備排気槽列であり、これらの予備排気槽列３，４は
いずれも、真空処理槽２に向けて漸次に高真空度に調圧
区分した予備排気槽３ａｌ ３ｂｔ ３Ｃ，３ｄ、 ３
ｅおよび４ａ、 ’４ｂ、 ４ｃ＋ ４ｄｔ ４ｅから
なる。In the figure, number 1 is the uncoiler, 12 is the vacuum processing tank, and 3
．． Reference numerals 4 denote preliminary evacuation tank rows placed on the inlet and outlet sides of the vacuum processing tank 2, and both of these pre-evacuation tank rows 3 and 4 gradually adjust to a high degree of vacuum toward the vacuum processing tank 2. Pressure-divided preliminary exhaust tank 3al 3bt 3C, 3d, 3
Consists of e and 4a, '4b, 4c+ 4dt 4e.
５は巻取り機、６はシャー、７ａ〜７Ｃはそれぞれ回転
真空ポンプ、また８はメカニカルブースタポンプと回転
真空ポンプ、９は油拡散ポンプと回転真空ポンプである
。5 is a winding machine, 6 is a shear, 7a to 7C are rotary vacuum pumps, 8 is a mechanical booster pump and a rotary vacuum pump, and 9 is an oil diffusion pump and a rotary vacuum pump.
そして１０がエレクトロンビーム照射装置であり、１１
でエレクトロンビームを表わす。10 is an electron beam irradiation device, and 11
represents an electron beam.
又１２が、エレクトロンビーム照射時に鋼板の幅方向が
エレクトロンビーム照射源に対して凹形状となるように
鋼板を湾曲させる鋼板湾曲装置である。Reference numeral 12 denotes a steel plate bending device that bends the steel plate so that the width direction of the steel plate is concave with respect to the electron beam irradiation source during electron beam irradiation.
なおこの発明では、エレクトロンビーム照射領域の真空
度を一層高めるために、第２図に示したように真空処理
槽２内に高真空室を設けることもできる。すなわち同図
に示したところにおいて、１３がエレクトロンビームの
照射径路１１をさらに高真空とするための高真空室であ
り、１４は高真空にするための油拡散ポンプと真空回転
ポンプへの排気孔である。In the present invention, in order to further increase the degree of vacuum in the electron beam irradiation region, a high vacuum chamber may be provided within the vacuum processing tank 2 as shown in FIG. 2. In other words, in the figure, 13 is a high vacuum chamber for making the electron beam irradiation path 11 even higher vacuum, and 14 is an exhaust hole for an oil diffusion pump and a vacuum rotary pump for making the electron beam irradiation path 11 even higher vacuum. It is.
（作 用）
さて常法に従う仕上げ焼鈍工程を経たけい素鋼板に対す
る真空エレクトロンビーム照射処理は次の要領で行なわ
れる。(Function) Vacuum electron beam irradiation treatment for a silicon steel plate that has undergone a final annealing process according to a conventional method is performed in the following manner.
最終処理を経て巻取られた一方向性けい素鋼板のコイル
は、アンコイラ−１で巻戻され、連続エアーツーエアー
による予備排気槽列３を通って真空処理槽２内に導入さ
れる。The coil of unidirectional silicon steel plate wound after the final treatment is unwound by an uncoiler 1 and introduced into a vacuum treatment tank 2 through a continuous air-to-air preliminary evacuation tank array 3.
次いでエレクトロンビーム照射装置１０を用いて鋼板の
圧延方向を横切る向きに３〜１５−間隔においてエレク
トロンビームを走査する。ここにエレクトロンビームの
照射軌跡は必ずしも連続線である必要はなく、局所的に
断続した線であってもさらには破線であってもよい。Next, using the electron beam irradiation device 10, the electron beam is scanned at intervals of 3 to 15 in a direction transverse to the rolling direction of the steel plate. Here, the irradiation locus of the electron beam does not necessarily have to be a continuous line, but may be a locally interrupted line or even a broken line.
なおこのときのエレトクロンビームは、真空度が低いと
真空放電を多発し、エレトクロンビームによる有効な処
理が減殺されるため鋼板の低鉄損化に支障をきたす。従
ってかかる不利を回避するためには第２図に示したよう
に、エレトクロンビームを鋼板に照射する領域（図中斜
線で示す１５の領域）を真空槽２より一層高真空にする
ことが好ましい。このときの真空度差は、真空処理槽２
内が１０−３〜１０−’ｉｆｆｌ）Ｉｇであるときは、
１５の斜線領域はＩ Ｘｌ０−’〜１０−’＋＋ｕａＨ
ｇ程度とすれば充分である。Note that the electrochron beam at this time causes frequent vacuum discharges when the degree of vacuum is low, which reduces the effective treatment by the electrochron beam, which poses a problem in reducing the iron loss of the steel plate. Therefore, in order to avoid such disadvantages, as shown in FIG. 2, it is necessary to make the area where the steel plate is irradiated with the electrochron beam (area 15 indicated by diagonal lines in the figure) a higher vacuum than the vacuum chamber 2. preferable. The difference in degree of vacuum at this time is
When the inside is 10-3 to 10-'iffl)Ig,
The shaded area of 15 is I Xl0-'~10-'++uaH
It is sufficient if it is about 100 g.
ところで上記のようなエレクトロンビーム照射において
、位置が固定された照射源から、走行する鋼板の平面に
対して単に照射しただけでは、鋼板の板幅方向中央部と
端部とでは照射効果に差異が生じる。By the way, in the above-mentioned electron beam irradiation, if the irradiation source at a fixed position simply irradiates the flat surface of a moving steel plate, there will be a difference in the irradiation effect between the center and the edges of the steel plate in the width direction. arise.
すなわちたとえば水平通板する５００閣幅の鋼板に対し
、垂直距離で１０００ｍｍの上方からエレクトロンビー
ムを照射する場合を考えると、第３図に破線で示すよう
に、鋼板の中央部と端部とでは照射距離が３０ｎｎも異
なり、ビーム径の相違は約２５％にも達し、従ってエレ
クトロン照射効果に鋼板板幅方向で不均一が生じていた
のであるや
この点この発明では、以下に詳述する鋼板湾曲装置を用
いて上記の問題を解決した。In other words, for example, if we irradiate an electron beam from a vertical distance of 1000 mm above a 500mm wide steel plate that is being threaded horizontally, the difference between the central part and the edge of the steel plate is as shown by the broken line in Figure 3. The irradiation distance was different by 30 nn, and the difference in beam diameter was about 25%, which caused non-uniformity in the electron irradiation effect in the width direction of the steel plate. A bending device was used to solve the above problem.
第４図に、この発明に従う鋼板湾曲装置の好適例を模式
で示し、図中番号１６は回転子、１７はかかる回転子を
多数具備して鋼板を上下から拘束する治具であって、上
記の鋼板湾曲装置は、かかる治具１７をエレクトロン照
射領域を挟んでその前後に具備する。ここにかような治
具１７による鋼板の湾曲形状は、エレクトロンビーム照
射源に対する鋼板板幅方向の対向姿勢が、該照射源を中
心とする円弧に沿う凹形状とすることが肝要である。FIG. 4 schematically shows a preferred example of the steel plate bending device according to the present invention, in which numeral 16 is a rotor, 17 is a jig that is equipped with a large number of such rotors and restrains the steel plate from above and below, The steel plate bending apparatus is equipped with such jigs 17 in front and behind the electron irradiation area. It is important that the curved shape of the steel plate formed by the jig 17 is such that the facing attitude of the steel plate in the width direction with respect to the electron beam irradiation source is a concave shape along an arc centered on the irradiation source.
そしてエレクトロン照射領域については、鋼板を上記の
治具対による拘束下に通板させてやれば、第３図に実線
で示したように、鋼板板幅方向にわたるビームスポット
径の変化はなくなり、かくして板幅方向にわたって均一
な照射効果が得られることになるのである。Regarding the electron irradiation area, if the steel plate is passed through while being restrained by the pair of jigs mentioned above, as shown by the solid line in Fig. 3, there will be no change in the beam spot diameter across the width of the steel plate. This results in a uniform irradiation effect across the width of the plate.
上記のようにして鋼板表面上にエレクトロンビームを照
射した鋼板は、真空処理槽２の出側でやはりこの処理槽
２に近い程高真空度に調圧区分した予備排気槽列４を経
由させて、大気中に導出し、その後コイル５に巻取る。The steel plate whose surface has been irradiated with an electron beam as described above is passed through a pre-evacuation tank array 4 on the exit side of the vacuum treatment tank 2, which is divided into sections with a pressure regulated to a higher vacuum degree closer to the treatment tank 2. , led out into the atmosphere, and then wound into a coil 5.
かくして効果的に磁区が細分化され、ひいては鉄損特性
が向上するのである。In this way, the magnetic domains are effectively subdivided, and as a result, the iron loss characteristics are improved.
（実施例）
実施機上
仕上げ焼鈍を経た一方向性けい素鋼板（厚み：０．２３
ｍｏ＋：幅：５００ｍａ＋）に、りん酸塩とコロイダル
シリカとを主成分とする絶縁被膜を形成させて巻取った
コイル（約８トン）を、ラインスピード３０ｍ／１Ｉｉ
ｎにて前掲第１図に示した真空連続処理設備に通し、エ
レクトロンビームを鋼板の幅方向にわたって、加速電圧
６５ｋＶ、電流６０ｍＡ、走査間隔１０薗、ビーム径０
．１ ｍｍ、第２図の１５の真空度３ Ｘｌ０−５＋ｎ
ｍＨｇの条件下に照射した。なおエレクトロン照射領域
については、第４図に示した鋼板湾曲装置を用いて板幅
方向にわたる綱板面とエレクトロンビーム源との距離が
等しく １０００ｍｍとなるよう円弧状に鋼板を湾曲さ
せた。(Example) Unidirectional silicon steel plate (thickness: 0.23
mo+: Width: 500ma+) was wound with an insulating coating mainly composed of phosphate and colloidal silica (approximately 8 tons) at a line speed of 30m/1Ii.
The electron beam was passed through the vacuum continuous processing equipment shown in Figure 1 above at n, and the electron beam was applied across the width of the steel plate at an accelerating voltage of 65 kV, a current of 60 mA, a scanning interval of 10 mm, and a beam diameter of 0.
．． 1 mm, vacuum degree 3 of 15 in Figure 2 Xl0-5+n
Irradiation was performed under mHg conditions. Regarding the electron irradiation area, the steel plate was curved into an arc using the steel plate bending device shown in Fig. 4 so that the distance between the steel plate surface and the electron beam source in the width direction of the steel plate was equal to 1000 mm.
かくして得られた製品の磁気特性は次のとおりであった
。The magnetic properties of the thus obtained product were as follows.
Ｂ、。＝１．９２Ｔ 、 Ｗｌ、ｚｓ。＝０．７９Ｗ／
ｋｇ。B. =1.92T, Wl, zs. =0.79W/
kg.
尖施１−
鋼成分０．０４８％Ｃ，３，３３％Ｓｉ、 ０．０７０
％Ｍｎ。Sharpening 1 - Steel composition 0.048%C, 3.33%Si, 0.070
%Mn.
０．０２３％ＡＩ、 ０．０２６％Ｓ、 ０．０９％Ｓ
ｎ、 ０．００６％Ｃｕの組成になる熱延板を、１００
０°Ｃで３分間の中間焼鈍をはさんで２回の冷間圧延を
施して板厚０．２０ｍｍの冷延板としたのち、８５０
’Ｃで脱炭処理後、８５０°Ｃから１５°Ｃ／ｈで１０
５０°Ｃまで昇温しで２次再結晶させ、ついで１２００
°Ｃで８時間の純化処理を施して得た一方向性けい素鋼
板につき、その表面上の酸化物を酸洗により除去した後
、電解研磨により中心線平均粗さＲａ＝０．０８μｍに
鏡面研磨した後、イオンブレーティング装置を用いてＴ
ｉＮ被膜（０，８μｍ）を鋼板両面に形成させ、ついで
りん酸とコロイダルシリカとを主成分とする絶縁被膜を
形成させた。0.023%AI, 0.026%S, 0.09%S
A hot rolled sheet having a composition of n, 0.006% Cu was heated to 100
After cold-rolling twice with intermediate annealing at 0°C for 3 minutes to obtain a cold-rolled plate with a thickness of 0.20 mm, the 850
After decarburizing at 'C, from 850°C to 15°C/h for 10
The temperature was raised to 50°C for secondary recrystallization, and then the temperature was raised to 1200°C.
A unidirectional silicon steel sheet obtained by purification treatment at °C for 8 hours was removed by pickling to remove oxides on its surface, and then electrolytically polished to a mirror-like surface with a centerline average roughness of Ra = 0.08 μm. After polishing, T is applied using an ion blating device.
An iN film (0.8 μm) was formed on both sides of the steel plate, and then an insulating film containing phosphoric acid and colloidal silica as main components was formed.
その後前掲第１図の装置を用いて、次の条件下に湾曲ｒ
４板表面にエレクトロンビームを照射した。Then, using the apparatus shown in Figure 1 above, bend r under the following conditions.
An electron beam was irradiated onto the surface of the four plates.
ラインスピード： １５ｍ／ｍ１ｎ
ＥＢ照射条件：加速電圧６５ｋＶ
：電流３０ｍＡ
：照射間隔８ｍｍ
：照射径０．１５薗
かくして得られた製品の磁気特性は
Ｂ＋ｏ＝１．９４７ 、、Ｌ、ｚｓ。＝０．５！Ｅ／ｋ
ｇ。Line speed: 15m/m1n EB irradiation conditions: Acceleration voltage 65kV: Current 30mA: Irradiation interval 8mm: Irradiation diameter 0.15mm The magnetic properties of the product thus obtained are B+o=1.947, L, zs. =0.5! E/k
g.
であった。Met.
（発明の効果）
かくしてこの発明によれば、一方向性けい素鋼板の表面
に有効にエレクトロンビームを照射することができるの
で、効果的な磁区の細分化ひいては鉄損の低減が達成さ
れる。(Effects of the Invention) Thus, according to the present invention, since the surface of the unidirectional silicon steel plate can be effectively irradiated with an electron beam, effective subdivision of magnetic domains and reduction of iron loss can be achieved.
第１図は、この発明に従う連続処理設備の好適例を模式
で示した図、
第２図は、高真空室をそなえる真空処理槽の詳細図、
第３図は、エレクトロンビーム照射時におけるエレクト
ロンビーム照射源と鋼板の位置関係を示した図、
第４図は、鋼板湾曲装置の模式図である。
１・・・アンコイラ−２・・・真空処理槽３．４・・・
予備排気槽列 ５・・・巻取り機６・・・シャー
７ａ〜７ｃ・・・回転真空ポンプ８・・・メカニ
カルブースタポンプと回転真空ポンプ９・・・油拡散ポ
ンプと回転真空ポンプ１０・・・エレクトロンビーム照
射装置１１・・・エレクトロンビームFig. 1 is a diagram schematically showing a preferred example of continuous processing equipment according to the present invention, Fig. 2 is a detailed view of a vacuum processing tank equipped with a high vacuum chamber, and Fig. 3 is an electron beam during electron beam irradiation. FIG. 4, which shows the positional relationship between the irradiation source and the steel plate, is a schematic diagram of the steel plate bending device. 1...Uncoiler-2...Vacuum treatment tank 3.4...
Pre-exhaust tank row 5... Winder 6... Shear
7a to 7c...Rotary vacuum pump 8...Mechanical booster pump and rotary vacuum pump 9...Oil diffusion pump and rotary vacuum pump 10...Electron beam irradiation device 11...Electron beam
Claims (1)
経た鋼板に対し、その圧延方向を横切る向きにエレクト
ロンビームを照射するエレクトロンビーム照射装置およ
びエレクトロンビーム照射時における該照射源に対する
鋼板板幅方向の対向姿勢を、該照射源を中心とする円弧
に沿う凹形状に保持する鋼板湾曲装置を有する真空処理
槽と、この真空処理槽の入側と出側にて、該処理槽に向
けて漸次に高真空度に調圧したそれぞれ複数の予備排気
槽列とをそなえてなる、一方向性けい素鋼板の鉄損低減
連続処理設備。1. An electron beam irradiation device that irradiates an electron beam in a direction transverse to the rolling direction of a steel plate that has undergone a final annealing process according to the conventional method for unidirectional silicon steel sheets, and the width of the steel plate relative to the irradiation source during electron beam irradiation. A vacuum processing tank having a steel plate bending device that maintains a facing attitude in a concave shape along an arc centered on the irradiation source; Continuous processing equipment for reducing iron loss of unidirectional silicon steel sheets, which is equipped with multiple rows of pre-evacuation tanks, each of which is gradually regulated to a high degree of vacuum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12854088A JPH01298118A (en) | 1988-05-27 | 1988-05-27 | Continuous iron loss reducing treatment apparatus for grain-oriented silicon steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12854088A JPH01298118A (en) | 1988-05-27 | 1988-05-27 | Continuous iron loss reducing treatment apparatus for grain-oriented silicon steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01298118A true JPH01298118A (en) | 1989-12-01 |
Family
ID=14987283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12854088A Pending JPH01298118A (en) | 1988-05-27 | 1988-05-27 | Continuous iron loss reducing treatment apparatus for grain-oriented silicon steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01298118A (en) |
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|---|---|---|---|---|
| WO2013099219A1 (en) * | 2011-12-27 | 2013-07-04 | Ｊｆｅスチール株式会社 | Device for improving core loss in grain-oriented electrical steel sheet |
| JP2013159824A (en) * | 2012-02-06 | 2013-08-19 | Jfe Steel Corp | Method and apparatus for refining magnetic domain |
| JP2013159845A (en) * | 2012-02-08 | 2013-08-19 | Jfe Steel Corp | Method for producing grain-oriented magnetic steel sheet |
| JP2013234342A (en) * | 2012-05-07 | 2013-11-21 | Jfe Steel Corp | Method of magnetic domain refinement and grain-oriented electromagnetic steel sheet |
| JP2014019901A (en) * | 2012-07-18 | 2014-02-03 | Jfe Steel Corp | Method for producing grain oriented silicon steel sheet, and grain oriented silicon steel sheet |
| CN105779732A (en) * | 2012-10-30 | 2016-07-20 | 杰富意钢铁株式会社 | Method of manufacturing grain-oriented electrical steel sheet exhibiting low iron loss |
-
1988
- 1988-05-27 JP JP12854088A patent/JPH01298118A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013099219A1 (en) * | 2011-12-27 | 2013-07-04 | Ｊｆｅスチール株式会社 | Device for improving core loss in grain-oriented electrical steel sheet |
| JPWO2013099219A1 (en) * | 2011-12-27 | 2015-04-30 | Ｊｆｅスチール株式会社 | Iron loss improvement device for grain-oriented electrical steel sheet |
| US10745773B2 (en) | 2011-12-27 | 2020-08-18 | Jfe Steel Corporation | Device to improve iron loss properties of grain-oriented electrical steel sheet |
| US11377706B2 (en) | 2011-12-27 | 2022-07-05 | Jfe Steel Corporation | Device to improve iron loss properties of grain-oriented electrical steel sheet |
| JP2013159824A (en) * | 2012-02-06 | 2013-08-19 | Jfe Steel Corp | Method and apparatus for refining magnetic domain |
| JP2013159845A (en) * | 2012-02-08 | 2013-08-19 | Jfe Steel Corp | Method for producing grain-oriented magnetic steel sheet |
| JP2013234342A (en) * | 2012-05-07 | 2013-11-21 | Jfe Steel Corp | Method of magnetic domain refinement and grain-oriented electromagnetic steel sheet |
| JP2014019901A (en) * | 2012-07-18 | 2014-02-03 | Jfe Steel Corp | Method for producing grain oriented silicon steel sheet, and grain oriented silicon steel sheet |
| CN105779732A (en) * | 2012-10-30 | 2016-07-20 | 杰富意钢铁株式会社 | Method of manufacturing grain-oriented electrical steel sheet exhibiting low iron loss |
| CN105779732B (en) * | 2012-10-30 | 2017-09-12 | 杰富意钢铁株式会社 | The manufacture method of low iron loss orientation electromagnetic steel plate |
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